I am still amazed at how successfully the D-Day landings were kept secret. I doubt that it would be so easy today. Too many tweets. On 6 June 1944 my mother was a nurse in Leicester Royal Infirmary. There were military wards in the Infirmary and she was on one of them. Even so, no-one who did not need to know expected D-Day to happen when it did. The D-Day landings had been kept secret but some of the convalescent soldiers had inside information. Nevertheless they never discussed it, even among themselves. On 6 June there was total silence as the day nurses filed in. Usually there was a lot of banter and shouts of "left-right-left!" as the nurses marched in. But today the "boys" had managed to commandeer headphones from all over the hospital and were all eagerly monitoring the radio news. There were no headphones left in the civilian wards. It was clear that something was up, although for a long time the soldiers refused to say what it was. Within 24 hours the first casualties started arriving, by which time the cat was out of the bag.